A novel data on the complete list of robo-advisors (with names and launch dates) has been hand-collected for the purpose of my research study. I rely on the articles from several news and blog sources for financial advisory industry (thinkadvisor, financial planning, KITCES.com, etc.) to identify the names of robo-advisor service providers. I could identify 174 firms as the providers of robo-advisory services between 2006 and 2019. Among these, 98 firms started as robo-advisors; and 36 incumbent firms started robo-advisory services.